Electro-Chemical Devices (ECD) H10 - Manual (Page 7)

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2. Press “Mode” key until “pH” icon and “AUTO” icon light
up.
3. Rinse the pH electrode probe with distilled water and
immerse in the sample to be measured. Remove any air
bubbles trapped around the probe by shaking or stirring
the probe.
4. Press the “Mea.” key. The “WAIT” icon will start flashing.
The unit is waiting for a stable reading. The display will
track the pH value as sensed by the pH electrode probe.
5. When the “WAIT” icon disappears, the reading is then
“HOLD” and will not respond to further changes from
sample. The pH value shown is the pH value of the sample
at the set sample temperature.
[Note: For samples that are inherently unstable, the instrument will
not AUTOLOCK. In this case, use the pH NON‐ AUTOLOCK mode for
measurements.]
Measurement with an ATC/Temp probe in the pH
NON‐AUTOLOCK mode
1. Connect the pH electrode to the BNC connector and the
ATC/Temp probe to the ATC/Temp connector of the unit.
The “ATC” icon will light up.
2. Press “Mode” key until “pH” icon light up.
3. Rinse the pH electrode and ATC/temp probe with distilled
water and immerse in the sample to be measured.
4. Allow sufficient time for the display to stabilize. The
instrument will display the pH value of the sample at the
displayed sample temperature.
Measurement with manual temperature
compensation in the pH NON‐AUTOLOCK mode
1. Connect the pH electrode to the BNC connector of the
unit. The “MAN” icon will light up.
2. Press “Mode” key until “pH” icon light up.
3. Rinse the pH electrode probe with distilled water and
immerse in the sample to be measured.
4. Allow sufficient time for the display to stabilize. The
instrument will display the pH value of the sample at the
set sample temperature.
7
Display and Key Functions
A. Display
Figure 2
1. WAIT
This will be displayed when
the unit is still waiting for a
stable reading or end point
sensing. 6. HOLD
This will indicate that the reading
is frozen during AUTOLOCK mode.
2. BAT‐
Low Battery Indicator 7. EFF (%)‐
This will be displayed if the user is
viewing the efficiency of the
electrode. It is recommended to
use a new electrode when the
efficiency value is less than 75%.
3. ATC/MAN
ATC indicator will be
displayed
if a temperature probe is
connected otherwise the
MAN indicator will be
displayed. 8. pH/mV
Unit and mode indicators.
4. STAND/SLOPE
This indicator will flash if
the STAND or SLOPE is not
yet calibrated. This indicator
will remain lit‐up if the
STAND or SLOPE has been
calibrated respectively. 9. Main display for pH, mV
and probe efficiency values
5. AUTO‐
Auto Lock mode indicator 10. Temperature and unit display